z/OS JES2 Initialization and Tuning Guide
Previous topic | Next topic | Contents | Contact z/OS | Library | PDF


Quick start

z/OS JES2 Initialization and Tuning Guide
SA32-0991-00

You can perform a quick start when you respond with the keyword WARM to the request for options ($HASP426 SPECIFY OPTIONS) at the console and JES2 determines that the job queue and job output table do not need to be updated. In this case, the member being started is not the first member being started in the MAS.This can occur in these circumstances:
  • After $P JES2 has been issued to quiesce the member. Because all work is quiesced, there is no need to update the job queue or job output table before restarting.
  • After an all-member warm start has been performed and no work is waiting to be processed; therefore, the job and output queues are empty.
  • A $E MEM command was entered at a processor within the multi-access spool configuration other than the member being started. This gives the issuing member the ability to:
    • Process any jobs that had a specific affinity for the member being reset.
    • Process any output for the reset member.
    • Restart any jobs that were interrupted on the reset member.
    • Dynamically add a new member to a multi-access spool configuration. A new member is defined as a member that has a NAME (on the MEMBER statement) that has not been previously defined to the MAS.
    Thus, there is no need to update the job queues or job output table on the reset member.

On a quick start, as on all other start types, JES2 validates (and rebuilds when necessary the job and output queues and the job queue index. Damaged or corrupted job output elements (JOEs) and job queue elements (JQEs) are placed on the rebuild queue.

Go to the previous page Go to the next page




Copyright IBM Corporation 1990, 2014